检索结果-内蒙古大学图书馆

materials ASPECTS OF DAMAGE TOLERANCE AND RELIAbILITY OF SHIP STRUCTURES AND COMPONENTS

NAVAL ENGINEERS JOURNAL 1994年第4期106卷 192-207页

作者： KHAN, MZS SAUNDERS, DS bURCH, IA MOURITZ, AP Dr. M. Z. Shah-Khan: currently a research scientist received his Bachelor of Engineering degree in Mechanical Engineering from Osmania University India in 1978. He took postgraduate work at Iowa State University receiving an M.S. degree in Metallurgy in 1981. In 1983 he joined University of New South Wales Australia and obtained the Doctor of Philosophy degree in Metallurgy in 1986. In 1986 he assumed his present position where he has been active in the research of fatigue and fracture of high strength naval construction steels in support of the Naval Ship Structure Research Program. His recent work has been in the development and application of techniques for the measurement of residual stress during the fabrication of a submarine hull. Dr. D. S. Saunders: B. Appl. Sc. (Hons) Adelaide Ph.D. Monash is a principal research scientist and has been involved in research into the fatigue and fracture behaviour of steels and aluminum alloys. He has worked on the development of fracture toughness specimens for artillery projectiles and rocket motors and has undertaken development and application of elastic-plastic fracture toughness techniques to high strength steels for military applications. More recently he has studied the fatigue behaviour of carbon fibre composite laminates for aircraft applications. Present research involves the application of composite materials to naval structures and the development of fracture mechanics methods which can predict fracture properties in materials under high rates of loading. Dr. Saunders is a member of the Institution of Engineers of Australia and is affiliated with the Materials Society and the Composite Structures Society of the IEAust. Mr. Ian A. Burch: Dip. Appl. Sci. in Sec. Metallurgy Royal Melbourne Institute of Technology is an experimental officer and is involved in assessing the fracture properties of high strength hull steels for ship and submarine use. He is currently involved in developing the crack arrest fracture toughness test for assessing the dynami

The design and development process prior to the fabrication of maritime structures such as merchant ships, naval surface ships and submarines include the specification of a range of materials required to perform under most adverse conditions of environment and operational loads. The damage tolerance and reliability of such structures can only be assured through appropriate materials selection, application of regorous testing methodologies and through-life inspection and monitoring. The importance of the consideration of damage tolerance and reliability of maritime structures can be gauged by the consequences of in-service failures;for example, the break-up of merchant ships resulting in environmental disasters, loss of lives and wartime damage of naval ships and submarines. Factors that lead to service failures include corrosion, fatigue, corrosion fatigue, low toughness and poor design, and often these factors occur in combination. The range of materials used in maritime structures is diverse and includes mild steel (ship) plate, micro-alloyed steels, aluminium alloys and monolithic and foam sandwich glass fibre laminates. These materials all have different responses to the environmental and loading conditions and consequently extensive materials testing programs are necessary to put damage tolerance and reliability indicators in place. This paper addresses the materials and testing aspects of damage tolerance and reliability assessment of maritime structures, and deals broadly with corrosion and corrosion fatigue testing;fracture toughness testing;measurement of residual stresses within the structure;damage assessment and life calculations. The paper discusses testing methodologies that obtain essential property data for various materials under a range of environmental and loading conditions. The paper briefly addresses the application of property data to the prediction of the behavior of maritime structures and components as well as application to life prediction

关键词：

来源：评论

学校读者我要写书评

暂无评论

A METHODOLOGY FOR EVALUATION OF SHIP FIRE SAFETY

引用

NAVAL ENGINEERS JOURNAL 1992年第3期104卷 104-113页

作者： SPRAGUE, CM RICHARDS, RC bLANCHARD, MA Chester M. Sprague:is a licensed mechanical engineer in the State of California and retired from over 20 years service as a commissioned officer in the Coast Guard. All of his duty assignments were in the naval engineering career field. Since joining CompuCon with offices at the Coast Guard Research and Development Center he has specialized in fire protection engineering and continued development of an analytical methodology to assess fire safety on Coast Guard cutters. He received his B.S. degree from the V. S. Coast Guard Academy in 1969 and M.S. degree in mechanical engineering from the U. S. Naval Postgraduate School Monterey Calif 1983. He is an associate member of ASME. Robert C. Richards:attended Cornell University where he received BS (1969) and MS (1971) degrees in materials science and engineering. During his graduate studies he worked for Grumman Aerospace Corporation in materials development. He then attended the U.S. Coast Guard Officer Candidate School and was commissioned in January 1971. He worked for the USCG Field Test & Development Center the USCG Research & Development Center the Marine Technical and Hazardous Materials Division of USCG Headquarters and the Marine Safety Laboratories. Since 1973 he has been a civilian fire protection engineer working in fire safety research. In November 1980 he was promoted to chief Marine Fire and Safety Research Division as a supervisory fire protection engineer. He is a member of the Society of Fire Protection Engineers and the American Society for Testing and Materials. LCdr. Marc A. Blanchard USCG: is currently assigned as chief Hull Mechanical and Electrical Section Naval Engineering Division USCG Headquarters. He is a graduate of the U.S. Coast Guard Academy (1977) and received his MS in ocean engineering from Stevens Institute of Technology (1983). He previously served as damage control assistant in USCGC Courageous and as engineer officer in USCGC Dallas. His shore assignments include the Third CG District Naval Engineering Branch and

The overall fire safety of a ship is not obvious. It is dependent on many factors including the vast number of fire scenarios that are possible. A means is required to evaluate a ship for the many types of fires it may be subjected to. The analysis should show what would happen if various alternatives such as protected cable trays, better fire boundaries, or improved fire detection had been used. The Ship Fire Safety engineering Methodology (SFSEM) provides an integrated framework for analyzing fires on ships in comparison to established fire safety objectives. It accounts for all relevant aspects;the behavior of fire, the effectiveness of passive design features, automated suppression systems, barrier materials, flame spread paths, and manual firefighting. The Ship Applied Fire engineering (SAFE) computer programs implement SFSEM and evaluate the probability of spaces and barriers limiting a fire. The evaluation is conducted on a compartment-by-compartment basis. It incorporates the fire growth hazard with the probabilities of ignition, automated fire suppression, manual fire suppression, and barrier effectiveness. SAFE calculates the probable paths of fire spread based on time durations. SFSEM/SAFE has been used successfully in a design application and in a retrofit situation.

关键词：

来源：评论

学校读者我要写书评

暂无评论

FIELD SAMPLING OF RESIDUAL AVIATION GASOLINE IN SANDY SOIL

引用

GROUND WATER MONITORING AND REMEDIATION 1991年第2期11卷 107-120页

作者： OSTENDORF, DW LEACH, LE HINLEIN, ES XIE, YF 1 David W. Ostendorf is an associate professor in the Environmental Engineering Program of the Civil Engineering Department at the University of Massachusetts (Civil Engineering Department University of Massachusetts Amherst MA 01003). His research interests include unconfined aquifer contamination hazardous waste site remediation and analytical modeling of problems in environmental fluid mechanics. Dr. Ostendorf is a registered professional engineer in Massachusetts and a member of the American Geophysical Union American Society of Civil Engineers Soil Science Society of America Water Pollution Control Federation and Association of Environmental Engineering Professors as well as the National Water Well Association.2 Lowell E. Leach is an environmental engineer with the Robert S. Kerr Environmental Research Laboratory of the U.S. Environmental Protection Agency (RS Kerr Environmental Research Laboratory U.S. EPA P.O. Box 1198 Ada OK74820). Leach received his B.S. ingeological engineering at the University of Oklahoma in 1959 and has been a registered professional engineer in Oklahoma since 1966. With 29 years of experience in field applications of geological engineering he is responsible for developing methodology for sampling ground water and subsurface materials for the Robert S. Kerr Environmental Research Laboratory.3 Erich S. Hinlein is a research assistant in the Environmental Engineering Program of the Civil Engineering Department at the University of Massachusetts (Civil Engineering Department University of Massachusetts Amherst MA 01003). His research interests include ground water pollution hazardous waste site investigation and transport processes in unconfined aquifers. Hinlein graduated with a B.S. in electrical and computer engineering from the University of Massachusetts at Amherst in May 1985 and entered the Environmental Engineering Master's Degree Program in January 1989.4 Yuefeng Xie is a postdoctoral research associate in the Environmental Engineering Program of the Civil E

Two complementary field sampling methods for the determination of residual aviation gasoline content in the contaminated capillary fringe of a fine, uniform, sandy soil were investigated. The first method featured field extrusion of core barrels into pint-size Mason jars, while the second consisted of laboratory partitioning of intact stainless steel core sleeves. The barrel extrusion procedure involved jar headspace sampling in a nitrogen-filled glove box, which delineated the 0.7m thick residually contaminated interval for subsequent core sleeve withdrawal from adjacent boreholes. Soil samples removed from the Mason jars (in the field) and sleeve segments (in the laboratory) were subjected to methylene chloride extraction and gas chromatographic analysis to compare their aviation gasoline content. The barrel extrusion sampling method yielded a vertical profile with 0.10m resolution over an essentially continuous 5.0m interval from the ground surface to the water table. The sleeve segment alternative yielded a more resolved 0.03m vertical profile over a shorter 0.8m interval through the capillary fringe. The two methods delivered precise estimates of the vertically integrated mass of aviation gasoline at a given horizontal location, and a consistent view of the vertical profile as well. In the latter regard, a 0.2m thick lens of maximum contamination was found in the center of the capillary fringe, where moisture filled all voids smaller than the mean pore size. The maximum peak was resolved by the core sleeve data, but was partially obscured by the barrel extrusion observations, so that replicate barrels or a half-pint Mason jar size should be considered for data supporting vertical transport analyses in the absence of sleeve partitions.

关键词：

来源：评论

学校读者我要写书评

暂无评论

ROLE OF SIMULATION IN RAPID PROTOTYPING FOR CONCEPT DEVELOPMENT

引用

NAVAL ENGINEERS JOURNAL 1991年第3期103卷 204-211页

作者： KING, JF bARTON, DE J. Fred King:is the manager of the Advanced Technology Department for Unisys in Reston Virginia. He earned his Ph.D. in mathematics from the University of Houston in 1977. He has been principal investigator of research projects in knowledge engineering pattern recognition and heuristic problem-solving. Efforts include the development of a multi-temporal multispectral classifier for identifying graincrops using LANDSAT satellite imagery data for NASA. Also as a member of the research team for a NCI study with Baylor College of Medicine and NASA he helped develop techniques for detection of carcinoma using multispectral microphotometer scans of lung tissue. He established and became technical director of the AI Laboratory for Ford Aerospace where he developed expert scheduling modeling and knowledge acquisition systems for NASA. Since joining Unisys in 1985 he has led the development of object-oriented programming environments blackboard architectures data fusion techniques using neural networks and intelligent data base systems. Douglas E. Barton:is manager of Logistics Information Systems for Unisys in Reston Virginia. He earned his B.A. degree in computer science from the College of William and Mary in 1978 and did postgraduate work in London as a Drapers Company scholar. Since joining Unisys in 1981 his work has concentrated on program management and software engineering of large scale data base management systems and design and implementation of knowledge-based systems in planning and logistics. As chairman of the Logistics Data Subcommittee of the National Security Industrial Association (NSIA) he led an industry initiative which examined concepts in knowledge-based systems in military logistics. His responsibilities also include evaluation development and tailoring of software engineering standards and procedures for data base and knowledge-based systems. He is currently program manager of the Navigation Information Management System which provides support to the Fleet Ballistic Missile Progr

A valuable technique during concept development is rapid prototyping of software for key design components. This approach is particularly useful when the optimum design approach is not readily apparent or several known alternatives need to be rapidly evaluated. A problem inherent in rapid prototyping is the lack of a "target system" with which to interface. Some alternatives are to develop test driver libraries, integrate the prototype with an existing working simulator, or build one for the specific problem. This paper presents a unique approach to concept development using rapid prototyping for concept development and scenario-based simulation for concept verification. The rapid prototyping environment, derived from artificial intelligence technology, is based on a blackboard architecture. The rapid prototype simulation capability is provided through an object-oriented modeling environment. It is shown how both simulation and blackboard technologies are used collectively to rapidly gain insight into a tenacious problem. A specific example will be discussed where this approach was used to evolve the logic of a mission controller for an autonomous underwater vehicle.

关键词： Military engineering

来源：评论

学校读者我要写书评

暂无评论

DEVELOPMENT AND CERTIFICATION OF HSLA-100 STEEL FOR NAVAL SHIP CONSTRUCTION - REPLY

引用

NAVAL ENGINEERS JOURNAL 1990年第4期102卷 103-104页

作者： CZYRYCA, EJ LINK, RE WONG, RJ AYLOR, DA MONTEMARANO, TW GUDAS, JP Ernest J. Czyryca:is a research project leader in the Metals and Welding Division of the David Taylor Research Center. He participated in the cooperative education program at the Center with Drexel University graduating in 1965 with a B.S. degree in metallurgical engineering. He has since received a B.S. degree in civil engineering in 1969 from Johns Hopkins University and an M.S. degree in engineering mechanics in 1970 from the Pennsylvania State University. In his career at the Center he has been involved in or managed major development programs in naval structural metals alloys for machinery applications failure analyses and fatigue and fracture research. Richard E. Link:is a mechanical engineer in the Metals and Welding Division of the David Taylor Research Center. He received his B.S. and M.S. degrees in Mechanical Engineering from the University of Maryland in 1984 and 1985 respectively. His work at the Center includes participation in structural and machinery alloy development programs and research in elastic-plastic fracture mechanics analysis methods. He is an active member of ASTM Committee E-24 on Fracture Testing and the Society for Experimental Mechanics. Richard J. Wong:is a metallurgist in the Metals and Welding Division of David Taylor Research Center. He received his B.S. in materials science from the University of California Berkeley in 1979 and a M.S. degree in engineering science from Catholic University in 1984. His work at the Center includes advanced joining processes weld process development and weldability analysis of naval structural materials. Denise A. Aylor:is a materials engineer in the Metals and Welding Division of the David Taylor Research Center. She received her B.S. degree in materials engineering from Virginia Tech in 1980 and her M.S. degree in materials science and engineering from The Johns Hopkins University in 1984. Her work at the Center has focused on corrosion and corrosion control research of various Navy metallic alloys and of composite materials. Thomas W. M

A significant tonnage of HY-100 steel has been used in the structural designs of new ships and submarines for weight reduction, where HT and HY-80 steels had been previously used. A reduction in hull fabrication costs and higher productivity can be achieved by substitution of an HSLA steel for HY-100. The significant factor in cost savings through use of HSLA steel in fabrication is the reduction or elimination of preheat for welding. based on the success of the HSLA-80 steel system, a program was initiated to develop and certify an HSLA-100 steel as a replacement for HY-100 in order to reduce fabrication costs. The alloy development and evaluation to support the certification of HSLA-100 steel plate and weldments for surface combatant structural and ballistic protection applications are summarized. HSLA-100 development consisted of three phases: (1) laboratory alloy development to formulate an interim specification; (2) trial steel mill plate production; and (3) plate production for the certification program. An interim specification for HSLA-100 steel plate was used as the basis for the commercial production of over 200 tons of HSLA-100 by domestic steel plate mills. The alloy design of HSLA-100 represents a significantly different metallurgy and microstructure than HSLA-80 steel, but retains the wettability of very low carbon steel. The certification program was conducted to establish the properties, welding characteristics, fabricability, and structural performance of HSLA-100 steel plate over a range of gages from 1/4 to 3 3/4 inches. The certification program included the characterization of production HSLA-100 steel plate mechanical, physical, and fracture properties; evaluation of wettability and welding process limits for structures of high restraint; studies of fatigue properties and effects of marine environments on HSLA-100; and the fabrication and evaluation of large scale structural models to validate the laboratory developed welding process parameters

关键词： Shipbuilding materials

来源：评论

学校读者我要写书评

暂无评论

FLAMMAbILITY AND TOXICITY OF COMPOSITE-materials FOR MARINE VEHICLES

引用

NAVAL ENGINEERS JOURNAL 1990年第5期102卷 45-54页

作者： SEVART, JL GRIFFIN, OH GURDAL, Z WARNER, GA Jeffrey L. Sevart:is a native of Kansas and a 1985 graduate of Kansas State University with a B.S. in mechanical engineering (magna cum laude). After working as a stress analysis engineer at Boeing Military Airplane Company in Wichita Kans. he attended Virginia Polytechnic Institute and State University and received an M.S. in engineering mechanics in February 1988. He currently resides in Akron Ohio working as a research engineer in tire composites research at The Goodyear Tire and Rubber Company. O. Hayden Griffin Jr.:received his B.S. and M.S. in mechanical engineering from Texas Tech University in 1970 and 1971 respectively. He received his Ph.D. in engineering mechanics from Virginia Polytechnic Institute and State University in 1980. Prior to joining the faculty of Virginia Polytechnic Institute and State University as associate professor of engineering science and mechanics in September 1985 he was employed at the U.S. Naval Surface Warfare Center (Dahlgren Virginia) BF Goodrich Tire Group (Akron Ohio) the Bendix Advanced Technology Center (Columbia Maryland) and the Johns Hopkins University Applied Physics Laboratory (Laurel Maryland). He is currently an associate director of the Virginia Institute for Material Systems. He is a registered professional engineer in Virginia and is a member of the American Society of Mechanical Engineers and the American Society for Composites. Zafer Gürdal:received his M.S. in mechanical and aerospace engineering from Illinois Institute of Technology in 1981 and his Ph.D. in aerospace engineering from Virginia Polytechnic Institute and State University in 1985. He worked as a research associate in the Aerospace and Ocean Engineering Department at Virginia Tech before joining the Engineering Science and Mechanics Department as an assistant professor in September 1985. Professor Gürdal's research interests include: composite structures failure mechanics of composites structural optimization and damage tolerant design. He is a member of the American Institute

Characteristics of both thermoplastic and thermoset composite materials as they pertain to marine vehicle applications are discussed. Comparison of various material selection factors such as strength, damage and moisture resistance, and flammability and toxicity as well as cost and availability of thermoset and thermoplastic composite materials are presented. Methods for testing and reducing the flammability and toxicity are discussed. Many commercially available composite systems are reported to provide favorable characteristics for marine applications. Although there seems to be a need for improved production technology for thermoplastics, they present potential advantages in physical properties over thermoset composites.

关键词： Composite materials

来源：评论

学校读者我要写书评

暂无评论

OUT-OF-PRODUCTION MICRO-ELECTRONICS - AN ACHILLES HEEL OF DEFENSE SYSTEMS

引用

NAVAL ENGINEERS JOURNAL 1988年第5期100卷 69-72页

作者： MACKENZIE, CM WOOTTEN, R HOY, K NEELY, J KOSCO, D SMITH, W C. Malcolm Mackenzie:is the Materials and Parts Availability Control program manager at U.S. Army Laboratory Command Adelphi Md. Mr. Mackenzie has a B.S. degree in mechanical engineering from Northwestern University an M.S. degree in the same field from the University of Michigan and an M.B.A. from East Texas State University. Richard Wootten:is project officer of the U.S. Army Material Command's Materials and Parts Availability Control Information Data System Project Adelphi Md. Mr. Wootten holds an associate's degree in mechanical engineering from Northern Virginia Community College and a Bachelor of Science in Electronics Engineering from The University of Alabama. Kevin Hoy:is manager of the Microelectronics Obsolescence Management Program at the Naval Avionics Center Indianapolis. Mr. Hoy holds both bachelor and master of science degrees in mathematics from Purdue University. James Neely:is leader of the Materials Management Team Industrial Materials Division in the Directorate of Manufacturing Air Force Systems Command Dayton Ohio. Mr. Neely holds a bachelor's degree in political science from The University of Georgia and a master of science degree in public administration from The University of Missouri. Don Kosco:is an electronics engineer currently involved with introducing new technologies into weapons systems. He is in the Directorate of Reliability Maintainability and Technology Policy HQ Air Force Logistics Command Dayton Ohio. Mr. Kosco holds a bachelor of engineering degree from Widener University a master's in systems engineering from The Air Force Institute of Technology and an MBA from the University of Texas at San Antonio. William Smith:is head of the Plans Branch in the Office of Policy and Plans Defense Electronics Supply Center (DESC) Dayton Ohio. He was for many years manager ofDESC's Diminishing Manufacturing Sources (DMS) Program. Mr. Smith holds a bachelor of arts degree in political science from Indiana University.

both the timely manufacture of defense systems and their subsequent on-line operability depend upon the availability of component parts. The growing problem of microelectronic component nonavailability is casting a shadow over logistics support to these systems. This paper will discuss the causes of the problem and provide some examples of cases confronted by the DoD logistics community. It will also identify some actions which have been taken in the past to manage the issue as well as initiatives now underway. Finally it will look at what lies ahead.

关键词： Microelectronics

来源：评论

学校读者我要写书评

暂无评论

CENTENNIAL bANQUET ADDRESS

引用

Naval Engineers Journal 1988年第4期100卷 95-97页

作者： COSTELLO, RObERT b. UNDER SECRETARY OF DEFENSE (ACQUISITION) Robert B. Costello was nominated by President Reagan to be Under Secretary of Defense (Acquisition) in 1987 was confirmed by the Senate and took oath of office in December 1987. Born in New Rochelle New York on June 21 1926 Dr. Costello earned his B.C.E. and M.C.E. from Rensselaer Polytechnic Institute in 1947 and 1948. He received a Ph.D. in civil engineering from Cornell University in 1951. Dr. Costello enlisted in the Navy in 1944 was recalled to active duty as an officer during the Korean War and retired from the Naval Reserve with the rank of captain in 1978. After the Korean War Dr. Costello held a number of positions in advanced research and management specializing in material science aerospace missile testing and engineering. In 1960 Dr. Costello joined the Allison Division of General Motors as Chief of Missile Engineering. Subsequently he con- ducted scientific research in deep ocean engineering and acoustic research at the Defense Research Laboratories. He holds numerous patents in deep ocean materials systems and instrumentation. Dr. Costello then returned to the Allison Division as Director Liabon for the Main Battle Tank Program. Dr. Costello was then assigned to the Delco Electronics Division where he became the Director of Materials Management. In I982 Dr. Costello was appointed the Executive Director Purchasing Activities. for the entire General Motors Corporation. He was responsible for providing new directions and implementing a broad range of new programs throughout General Motors and its suppliers worldwide. He was nominated by President Reagan to be Assbtant Secretary of Defense (Production and Logistics) in October I986 and took oath of office in March 1987. He held thb position until his current appointment.

来源：评论

学校读者我要写书评

暂无评论

INSITU bIORESTORATION AS A GROUNDWATER REMEDIATION TECHNIQUE

引用

GROUND WATER MONITORING AND REMEDIATION 1986年第4期6卷 56-64页

作者： WILSON, JT LEACH, LE HENSON, M JONES, JN John T. Wilson is a research microbiologist with EPA's Robert S. Kerr Environmental Research Laboratory in Ada Oklahoma (P. O. Box 1198 Ada OK 74820). He is responsible for developing an in-house and extra-mural research program to define microbial transformations of organic contaminants in subsurface environments. He received a Ph. D. in soil microbiology from Cornell University in 1978 Lowell E. Leach is an environmental engineer with the Ada Laboratory (United States Environmental Protection Agency Robert S. Kerr Environmental Research Laboratory P. O. Box 1198 Ada OK 74820). He is responsible for developing methodology for sampling ground water and subsurface materials and manages an international cooperative research program on land treatment of waste waters with the Republic of China. He received a B. S. in geological engineering from Oklahoma University in 1959 Michael Henson is a research microbiologist with the Ada Laboratory. He conducts in-house research on microbial transformations of pollutants in the subsurface. He received a Ph. D. in microbiology from the University of Florida in 1983 Jerry N. Jones is a chemist with the Ada Laboratory. He has extensive experience with the U. S. Army Corps of Engineers Waterways Experiment Station in the remediation of hazardous waste sites. At Ada his research responsibilities are directed at remediation of ground water contamination from underground storage tanks. He received a B. S. in chemistry from East Central Oklahoma University in 1974 and an M. S. in environmental science from Oklahoma University in 1982

In situ biorestoration, where applicable, is indicated as a potentially very cost-effective and environmentally acceptable remediation technology. Many contaminants in solution in ground water as well as vapors in the unsaturated zone can be completely degraded or transformed into new compounds by naturally occurring indigenous microbial populations. Undoubtedly, thousands of contamination events are remediated naturally before the contamination reaches a point of detection. The need is for methodology to determine when natural biorestoration is occurring, the stage the restoration process is in, whether enhancement of the process is possible or desirable, and what will happen if natural processes are allowed to run their *** addition to the nature of the contaminant, several environmental factors are known to influence the capacity of indigenous microbial populations to degrade contaminants. These factors include dissolved oxygen, pH, temperature, oxidation-reduction potential, availability of mineral nutrients, salinity, soil moisture, the concentration of specific pollutants, and the nutritional quality of dissolved organic carbon in the ground *** enhanced in situ bioreclamation techniques available today are variations of hydrocarbon degradation procedures pioneered and patented by Raymond and coworkers at Suntech during the period 1974 to 1978. Nutrients and oxygen are introduced through injection wells and circulated through the contaminated zone by pumping one or more producing *** limiting factor in remediation technology is getting the contaminated subsurface material to the treatment unit or units, or in the case of in situ processes, getting the treatment process to the contaminated material. The key to successful remediation is a thorough understanding of the hydrogeologic and geochemical characteristics of the contaminated area.

关键词：

来源：评论

学校读者我要写书评

暂无评论

MASTER ORDNANCE REPAIR APPLIED - STANDARD ITEM 009-67

引用

NAVAL ENGINEERS JOURNAL 1986年第3期98卷 35-42页

作者： STIMSON, WA MARSH, MT UTTICH, RM William A. Stimsonreceived his B.S. degree in mathematics from the University of Texas at El Paso in 1964 and his M.S. degree in engineering from the University of Santa Clara in 1971. He served in the U.S. Army Artillery during the Korean Conflict and subsequently was employed at IBM Huntsville Alabama until 1968 where he worked in the design of automatic control systems of the Saturn vehicle. From 1968 until 1971 he was employed at Ames Research Center Moffett Field in the design of nonlinear control systems for sounding rockets and pencil-shaped spacecraft. Following this Mr. Stimson worked at Hewlett Packard Sunnyvale California as a test engineer in automatic test systems. Since 1973 Mr. Stimson has been employed at the Naval Ship Weapon Systems Engineering Station Port Hueneme. He was a ship qualification trials project supervisor for many years and is now serving as master ordnance repair deputy program manager. Mr. Stimson is a member of the American Society of Naval Engineers and is program chairman of the Channel Islands Section. Cdr. Michael T. Marsh USNreceived a B.S. in mathematics from the University of Nebraska and was commissioned via the NESEP program in 1970. He holds an M.S. in computer science from the U.S. Navy Postgraduate School and an MBA from the State University of New York. Cdr. Marsh has served in the weapons department of USSFrancis Hammond (FF-1067) and of USSJohn S. McCain (DDG-36). He was weapons officer aboard USSSampson (DDG-10). As an engineering duty officer Cdr. Marsh was the technical design officer for PMS-399 at the FFG-7 Class Combat System Test Center from 1978 to 1982. He is presently combat system officer at SupShip Jacksonville and has been active in the MOR program since its inception. Cdr. Marsh is also the vice chairman of the Jacksonville Section of ASNE. LCdr. Richard M. Uttich USNholds B.S. and M.S. degrees in mechanical engineering from Stanford University. He enlisted in the Navy in 1965 serving as an electronics technician aboard USSNereus (A

The 600-ship United States Navy offers private shipyards an unprecedented opportunity for overhaul of surface combatants with complex combat systems. Recognizing the new challenge associated with the overhaul of high technology combat systems in the private sector, the Navy in 1983 established the master ordnance repair (MOR) program. This program, a joint effort of the Naval Sea Systems Command (NAVSEA) and the Shipbuilders Council of America (SCA), was designed to identify and qualify those companies and private shipyards technically capable of managing combat systems work and conducting combat system testing. Standard Item 009–67 describes the role of the MOR company in combat system overhaul. It defines terms that are important to understanding the item itself, and imposes upon the prime contractor an obligation to utilize the MOR subcontractor in a managerial capacity. Specific tasks are assigned to the MOR company in planning, production, and testing. Finally, this standard item describes to the Navy planner how to estimate the size of the MOR team appropriate to the work package, a feature that will ensure that combat system bids are tailored to a specific availability.

关键词： WARSHIPS

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：